Datasheet > AL8863

AL8863

更新时间： 2024-09-27 14:55:19

品牌	Logo	应用领域
美台 - DIODES		/
页数	文件大小	规格书
13页	461K
描述
60V Buck LED Controller with Fault Flag

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AL8863 数据手册

AL8863

60V BUCK LED CONTROLLER WITH FAULT FLAG

Description

Pin Assignments

The AL8863 is a step-down DC/DC controller designed to drive LEDs

with high output current. The device operates at an input supply

voltage from 4.5V to 60V. Series connection of the LEDs provides

identical LED currents resulting in uniform brightness and eliminating

the need for ballast resistors. The switching frequency range of

AL8863 is from 50kHz to 1MHz. The wide operating frequency range

allows more flexibility on component selection, and also with

operating up to 1MHz, it allows the use of smaller size external

components, hence minimizing the PCB size and driver board.

(Top View)

OSP

DIM

CSN

FAULT

VIN

NTC

GND

DRV

SO-8EP

The output current of AL8863 is set via an external resistor connected

between the VIN and CSN input pins. Dimming is achieved by

applying a PWM signal at the DIM input pin. The soft-start time can

be adjusted using an external capacitor from the DIM pin to ground.

Applications



Commercial & Industrial Lighting

Architecture Lighting

External LED Drivers and Smart Lighting

The AL8863 is available in the thermally enhanced SO-8EP package.

Features



Wide Input Voltage Range: 4.5V to 60V

Operating Frequency Range: 50kHz to 1MHz

1000:1 PWM Dimming Resolution at 100Hz

Single Pin for On/Off and Brightness Control by PWM Signal

Fault Status Indication for Abnormal Operation

LED Shorted Protection

Inherent Open-Circuit LED Protection

Programmable Thermal Fold-Back Operation Through NTC Pin

Over Temperature Shutdown

Thermally Enhanced SO-8EP Package

Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

Halogen and Antimony Free. “Green” Device (Note 3)

Notes:

1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.

2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and

Lead-free.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and

<1000ppm antimony compounds.

1 of 13

www.diodes.com

August 2019

AL8863

Document number: DS42198 Rev. 1 - 2

12 3 4 5 6 7...13

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